Your files never leave your device
Got a file you can't open? Just drag it here. No software to install, no account needed. Works with PDFs, Word docs, Excel sheets, ZIP files, videos, and dozens more.
14+ formats
Don't see yours? Try it anyway — we handle hundreds of formats
No sign-up, no waiting. Your file opens in seconds.
Drag it onto the page, click to browse your device, or paste a link to a file on the web.
JustOpenFile automatically recognises what type of file it is — no need to tell us.
Your file opens right here in the browser. Nothing leaves your device.
No software needed
On a new computer, a borrowed laptop, or a work machine where you can't install anything? JustOpenFile opens almost any file right in your browser — PDFs, spreadsheets, documents, archives, images, videos, and more. Nothing to install, ever.
For websites & apps
Don't want to build a document viewer from scratch? Embed JustOpenFile on your site with one line of code. Your users get instant previews of PDFs, spreadsheets, images and more — no extra development needed.
<iframe src="https://justopenfile.com/en/viewer?file=YOUR_FILE_URL" width="100%" height="600"></iframe>
We built JustOpenFile on one simple rule: what you open is yours, and yours alone.
Files you open from your device never leave your computer
Remote files loaded by URL go directly from the source to your browser
When a proxy is needed, we stream the file and discard it immediately — nothing stored
No account required. No tracking. No ads.
No. When you open a local file, it is read entirely within your browser. It never leaves your device.
Yes — once the page has loaded, you can open any local file without an internet connection.
Try opening it anyway. We will attempt to display it as text, or show you a file summary if it is a binary file. You can also suggest new formats we should support.
Yes — embed the viewer on any website using a simple iframe. Your visitors can preview files without leaving your page.
Yes, the viewer is completely free to use. No hidden fees, no account required.
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